Features Suitable for most solar lamps on the market The switch lights can be timed, easy to operate The brightness can be adjusted according to your needs, simple and convenient The circuit board has no overcharge and over discharge protection, a battery protection board is required. High quality of the product can provide stable performance Specification: Item Type: Solar Light Circuit Board Compatible Working Voltage: 3.7V / 7.4V / 11.1V Lamp Board Voltage: 3V / 6V / 12V Charging Current: <4A Output Power: 6W / 10W / 20W Recommended Solar Panel Voltage: 6V / 12V / 18V Working Mode: Lighting control 6 hours of time control, 30% power saving The circuit board has no overcharge and over discharge protection, a battery protection board is required. Remote Control Battery Model: Button battery CR2025, capacity 140mAh Size: Approx. 46 x 38mm / 1.8 x 1.5in Package List: 1 x Module1 x Remote Control1 x Manual Package List 1 x Module 1 x Remote Control 1 x Manual